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c51f92693c
linux/arch/arm64/include/asm
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Ard Biesheuvel c51f92693c arm64: add abstractions for FPSIMD state manipulation 
There are two tacit assumptions in the FPSIMD handling code that will no longer
hold after the next patch that optimizes away some FPSIMD state restores:
. the FPSIMD registers of this CPU contain the userland FPSIMD state of
  task 'current';
. when switching to a task, its FPSIMD state will always be restored from
  memory.

This patch adds the following functions to abstract away from straight FPSIMD
register file saves and restores:
- fpsimd_preserve_current_state -> ensure current's FPSIMD state is saved
- fpsimd_update_current_state -> replace current's FPSIMD state

Where necessary, the signal handling and fork code are updated to use the above
wrappers instead of poking into the FPSIMD registers directly.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2014-05-08 11:31:41 +02:00
..
xen xen/arm64: do not call the swiotlb functions twice 2013-12-11 16:21:00 +00:00
arch_timer.h ARM64: arch_timer: add support to configure and enable event stream 2013-09-26 09:47:43 +01:00
asm-offsets.h
assembler.h arm64: asm: add CPU_LE & CPU_BE assembler helpers 2013-10-25 15:59:38 +01:00
atomic.h arm64: asm: remove redundant "cc" clobbers 2014-02-07 16:46:07 +00:00
barrier.h arm64: barriers: add dmb barrier 2014-03-10 11:57:40 +00:00
bitops.h arm64: klib: Optimised atomic bitops 2013-03-21 17:39:31 +00:00
cache.h arm64: Cache maintenance routines 2012-09-17 13:42:00 +01:00
cacheflush.h arm64: Implement coherent DMA API based on swiotlb 2014-02-27 17:16:59 +00:00
cachetype.h arm64: Cache maintenance routines 2012-09-17 13:42:00 +01:00
cmpxchg.h arm64: asm: remove redundant "cc" clobbers 2014-02-07 16:46:07 +00:00
compat.h ARM64: perf: support dwarf unwinding in compat mode 2014-03-13 11:22:38 +00:00
compiler.h arm64: Miscellaneous header files 2012-09-17 13:42:21 +01:00
cpu_ops.h arm64: kernel: cpu_{suspend/resume} implementation 2013-12-16 17:17:31 +00:00
cpufeature.h arm64: enable generic CPU feature modalias matching for this architecture 2014-03-14 18:01:36 +00:00
cputable.h arm64: CPU support 2012-09-17 13:41:59 +01:00
cputype.h Merge tag 'arm64-suspend' of git://linux-arm.org/linux-2.6-lp into upstream 2013-12-19 17:57:51 +00:00
debug-monitors.h arm64: KGDB: Add Basic KGDB support 2014-02-26 11:16:25 +00:00
device.h arm64: device: add iommu pointer to device archdata 2013-06-11 18:15:55 +01:00
dma-contiguous.h arm64: fix build error if DMA_CMA is enabled 2014-01-27 12:00:25 +00:00
dma-mapping.h arm64: Implement coherent DMA API based on swiotlb 2014-02-27 17:16:59 +00:00
elf.h arm64: compat: add support for big-endian (BE8) AArch32 binaries 2013-10-25 15:59:35 +01:00
esr.h arm64: fix typo: s/SERRROR/SERROR/ 2014-02-05 10:42:32 +00:00
exception.h arm64: Use irqchip_init() for interrupt controller initialisation 2013-03-26 16:02:23 +00:00
exec.h arm64: Miscellaneous header files 2012-09-17 13:42:21 +01:00
fb.h arm64: Device specific operations 2012-09-17 13:42:04 +01:00
fixmap.h arm64: add early_ioremap support 2014-04-07 16:36:15 -07:00
fpsimd.h arm64: add abstractions for FPSIMD state manipulation 2014-05-08 11:31:41 +02:00
fpsimdmacros.h arm64: move FP-SIMD save/restore code to a macro 2012-12-05 11:26:50 +00:00
futex.h arm64: asm: remove redundant "cc" clobbers 2014-02-07 16:46:07 +00:00
hardirq.h arm64: enable generic clockevent broadcast 2013-12-16 17:17:35 +00:00
hugetlb.h ARM64: mm: HugeTLB support. 2013-06-14 09:52:40 +01:00
hw_breakpoint.h arm64: Debugging support 2012-09-17 13:42:14 +01:00
hwcap.h arm64: advertise ARMv8 extensions to 32-bit compat ELF binaries 2014-03-04 08:06:32 +00:00
hypervisor.h arm64/xen: introduce asm/xen header files on arm64 2013-06-07 10:39:45 +00:00
insn.h arm64: introduce aarch64_insn_gen_{nop|branch_imm}() helper functions 2014-01-08 15:21:29 +00:00
io.h arm64: add early_ioremap support 2014-04-07 16:36:15 -07:00
irq.h arm64: add CPU_HOTPLUG infrastructure 2013-10-25 11:33:21 +01:00
irqflags.h arm64: Add macros to manage processor debug state 2014-02-26 11:16:25 +00:00
jump_label.h arm64, jump label: optimize jump label implementation 2014-01-08 15:23:53 +00:00
Kbuild arm64: add early_ioremap support 2014-04-07 16:36:15 -07:00
kgdb.h arm64: KGDB: Add Basic KGDB support 2014-02-26 11:16:25 +00:00
kvm_arm.h Merge tag 'kvm-3.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2014-04-02 14:50:10 -07:00
kvm_asm.h arm64: KVM: trap VM system registers until MMU and caches are ON 2014-03-03 01:15:21 +00:00
kvm_coproc.h arm64: KVM: 32bit handling of coprocessor traps 2013-06-12 16:42:16 +01:00
kvm_emulate.h A handful of fixes for KVM/arm64: 2013-11-11 12:05:20 +01:00
kvm_host.h arm64: KVM: Add Kconfig option for max VCPUs per-Guest 2013-12-28 10:28:50 +00:00
kvm_mmio.h arm64: KVM: MMIO access backend 2013-06-07 14:03:38 +01:00
kvm_mmu.h arm64: KVM: flush VM pages before letting the guest enable caches 2014-03-03 01:15:22 +00:00
kvm_psci.h arm64: KVM: PSCI implementation 2013-06-12 16:40:32 +01:00
linkage.h arm64: fix alignment padding in assembly code 2012-10-20 11:12:01 +01:00
memblock.h arm64: MMU initialisation 2012-09-17 13:41:56 +01:00
memory.h arm64: add early_ioremap support 2014-04-07 16:36:15 -07:00
mmu_context.h arm64: mm: don't bother invalidating the icache in switch_mm 2013-06-07 18:00:11 +01:00
mmu.h arm64: initialize pgprot info earlier in boot 2014-04-07 16:36:15 -07:00
module.h arm64: Loadable modules 2012-09-17 13:42:19 +01:00
neon.h arm64: add support for kernel mode NEON 2013-08-20 12:12:26 +01:00
page.h arm64: MMU fault handling and page table management 2012-09-17 13:41:57 +01:00
percpu.h arm64: Fix !CONFIG_SMP kernel build 2014-02-28 16:12:25 +00:00
perf_event.h arm64: perf: add guest vs host discrimination 2013-01-29 16:56:17 +00:00
pgalloc.h arm64: handle pgtable_page_ctor() fail 2013-11-15 09:32:16 +09:00
pgtable-2level-hwdef.h arm64: Use 42-bit address space with 64K pages 2013-11-05 17:23:52 +00:00
pgtable-2level-types.h ARM64: include: asm: include "asm/types.h" in "pgtable-2level-types.h" and "pgtable-3level-types.h" 2013-08-22 11:44:41 +01:00
pgtable-3level-hwdef.h arm64: MMU definitions 2012-09-17 13:41:56 +01:00
pgtable-3level-types.h ARM64: include: asm: include "asm/types.h" in "pgtable-2level-types.h" and "pgtable-3level-types.h" 2013-08-22 11:44:41 +01:00
pgtable-hwdef.h arm64: Update the TCR_EL1 translation granule definitions for 16K pages 2014-04-03 10:43:11 +01:00
pgtable.h - KGDB support for arm64 2014-03-31 15:01:45 -07:00
pmu.h arm64: Performance counters support 2012-09-17 13:42:17 +01:00
proc-fns.h arm64: kernel: suspend/resume registers save/restore 2013-12-16 17:17:31 +00:00
processor.h arm64: compat: add support for big-endian (BE8) AArch32 binaries 2013-10-25 15:59:35 +01:00
psci.h arm64: remove return value form psci_init() 2014-02-28 14:14:53 +00:00
ptrace.h ARM64: perf: support dwarf unwinding in compat mode 2014-03-13 11:22:38 +00:00
shmparam.h arm64: ELF definitions 2012-09-17 13:42:07 +01:00
sigcontext.h UAPI: (Scripted) Disintegrate arch/arm64/include/asm 2012-10-11 11:05:13 +01:00
signal32.h arm64: 32-bit (compat) applications support 2012-09-17 13:42:12 +01:00
smp_plat.h arm64: kernel: build MPIDR_EL1 hash function data structure 2013-12-16 17:17:30 +00:00
smp.h arm64: add CPU_HOTPLUG infrastructure 2013-10-25 11:33:21 +01:00
sparsemem.h arm64: MMU definitions 2012-09-17 13:41:56 +01:00
spinlock_types.h arm64: Fix the endianness of arch_spinlock_t 2013-10-25 16:10:22 +01:00
spinlock.h arm64: asm: remove redundant "cc" clobbers 2014-02-07 16:46:07 +00:00
stacktrace.h arm64: Exception handling 2012-09-17 10:24:46 +01:00
stat.h UAPI: (Scripted) Disintegrate arch/arm64/include/asm 2012-10-11 11:05:13 +01:00
string.h arm64: klib: Optimised string functions 2013-03-21 17:39:30 +00:00
suspend.h arm64: kernel: cpu_{suspend/resume} implementation 2013-12-16 17:17:31 +00:00
sync_bitops.h arm64/xen: introduce asm/xen header files on arm64 2013-06-07 10:39:45 +00:00
syscall.h arm64: check for number of arguments in syscall_get/set_arguments() 2013-10-23 15:45:35 +01:00
syscalls.h arm64: switch to generic sigaltstack 2013-02-14 09:17:29 -05:00
system_misc.h arm64: use common reboot infrastructure 2013-07-19 15:57:08 +01:00
thread_info.h preempt: Make PREEMPT_ACTIVE generic 2013-11-13 20:21:47 +01:00
timex.h arm64: kernel: compiling issue, need delete read_current_timer() 2013-06-10 17:58:20 +01:00
tlb.h arm64: Convert asm/tlb.h to generic mmu_gather 2014-02-26 11:16:27 +00:00
tlbflush.h ARM64: mm: THP support. 2013-06-14 09:52:41 +01:00
topology.h arm64: topology: Implement basic CPU topology support 2014-03-04 10:30:07 +00:00
traps.h arm64: Exception handling 2012-09-17 10:24:46 +01:00
uaccess.h arm64: Fix __range_ok macro 2014-03-20 17:41:27 +00:00
ucontext.h arm64: fix padding computation in struct ucontext 2013-03-18 10:42:16 +00:00
unistd32.h arm64: compat: Wire up new AArch32 syscalls 2014-02-05 12:03:52 +00:00
unistd.h compat: let architectures define __ARCH_WANT_COMPAT_SYS_GETDENTS64 2014-03-04 09:05:33 +01:00
vdso_datapage.h arm64: VDSO support 2012-09-17 13:42:09 +01:00
vdso.h arm64: VDSO support 2012-09-17 13:42:09 +01:00
virt.h Revert "arm64: virt: ensure visibility of __boot_cpu_mode" 2014-04-05 10:06:20 +01:00
word-at-a-time.h arm64: dcache: select DCACHE_WORD_ACCESS for little-endian CPUs 2013-12-19 17:43:08 +00:00